Specifications (continued) – Atec HP-Agilent-8643A-44B-64A-65AB User Manual

Page 10

8643A

8644B

8664A
8665A/B

Pulse modulation

Option 008

On/off ratio:

>35 dB, >80 dB, >1030 MHz

>80 dB

Rise/fall time, 10 - 90%:

<100 ns

<5 ns

Repetition rate:

dc to 1 MHz

dc to 10 MHz

Internal width/delay:

N/A

Variable from 50 ns to 1s ±5%
accuracy, 0.2% of full scale
resolution

Minimum width:

0.5

µs

10 ns

Video feedthrough/overshoot:

<15%

<25%

Output level accuracy:

±2 dB

Same as standard

External inputs/outputs:

Input level: On state; >3.0 V

peak

Input level: TTL into 50

Ω or

(600

Ω input impedance) Off state; <0.8 V

peak

Schottky TTL

Sync out and video out: TTL

into 50

Ω

Internal modulation source
Number of sources:

Two sources simultaneously available through summation, independently adjustable in frequency,
phase, amplitude and waveform. Source one may also be internally modulated with AM, FM, phase
modulation and pulse modulation to create a subcarrier waveform.

Waveforms and rates:

Sine, white Gaussian noise; 0.1 Hz to 400 kHz
Triangle, sawtooth, square; 0.1 Hz to 50 kHz

Frequency accuracy:

Same as timebase

Output level (into 600

Ω):

1 V

peak

, 2 V

peak

for 8643A and 8644B

Output resolution:

2 mV

peak

Total harmonic distortion:

<0.1%,

≤20 kHz rates

Frequency sweep
Digital sweep:

Digitally stepped sweep over entire frequency range. Linear/log selection. .5 to 1000 sec sweeps.

Markers/Z axis output:

Three markers available /Z axis output nominally +5 V/X axis output nominally 0 to 10 V.

Phase continuous sweep:

40 MHz of span available at maximum carrier frequency. 20 ms to 10 sec sweep times.

Remote programming
Interface:

GPIB (IEEE 488.2-1987).

Control language:

Hewlett-Packard Systems Language (HP-SL). All functions controlled except power.

IEEE-488 functions:

SH1, AH1, T6, TEO, L4, LEO, SR1, RL1, PPO, DC1, DTO, CO, E2.

Specifications (continued)